PIC16F689T-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F689T-I/SO

20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC16F631/677/685/687/689/690

EXAMPLE 9-1: A/D CONVERSION

;This code block configures the ADC

;for polling, Vdd reference, Frc clock

;and AN0 input.

;

;Conversion start & polling for completion

; are included.

;

BANKSEL ADCON1

;

MOVLW

B’01110000’ ;ADC Frc clock

MOVWF

ADCON1

;

BANKSEL TRISA

;

BSF

TRISA,0

;Set RA0 to input

BANKSEL ANSEL

;

BSF

ANSEL,0

;Set RA0 to analog

BANKSEL ADCON0

;

MOVLW

B’10000001’ ;Right justify,

MOVWF

ADCON0

; Vdd Vref, AN0, On

CALL

SampleTime ;Acquisiton delay

BSF

ADCON0,GO ;Start conversion

BTFSC

ADCON0,GO ;Is conversion done?

GOTO

$-1

;No, test again

BANKSEL ADRESH

;

MOVF

ADRESH,W

;Read upper 2 bits

MOVWF

RESULTHI

;store in GPR space

BANKSEL ADRESL

;

MOVF

ADRESL,W

;Read lower 8 bits

MOVWF

RESULTLO

;Store in GPR space

9.2.7 ADC REGISTER DEFINITIONS

The following registers are used to control the

operation of the ADC.

DS41262E-page 112

© 2008 Microchip Technology Inc.

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